It's a pressurized water plant like Fukishima was. Not quite 3x but still more than 2. Qinshan is a CANDU reactor, so that's why its 10 times more than what they're annually releasing from Fukishma. They release a lot of tritium because they use heavy water as a moderator. Any nuke plant that has a Lithium channel for producing tritium for nuclear weapons will also, of course, release a lot of it comparatively.